The invention discloses a milk powder box connected between a feeding bottle and a nipple. The milk powder box comprises a milk powder chamber and an integrated bottom the milk powder chamber is provided with a powder outlet the integrated bottom is capable of isolating the milk powder chamber and the feeding bottle by covering the powder outlet the integrated bottom and the milk powder chamber can rotate in relation to each other to form a milk powder passage whereby the milk powder chamber and the feeding bottle are communicated and to from a milk passage from the feeding bottle to the nipple. The invention further discloses a quick brewing unit comprising the feeding bottle and the milk powder box. before brewing, milk powder is charged into the milk powder chamber, the powder outlet is covered with the integrated bottom, and the feeding bottle, the milk powder box and the nipple are connected for use milk powder can be brewed for drinking, just by rotating the milk powder chamber or the integrated bottom to drop the milk powder into the feeding bottle and shaking the feeding bottle. The milk brewing unit is simple in structure, the process of milk powder brewing is simplified, the milk powder and warm water in the feeding bottle are fully isolated before brewing, and residue of the milk powder rarely occurs.